What you need
Choose a still JPEG, PNG, or WebP file. Transparency is retained when the browser encoder supports it.
Image Tools / Local studio
WebP Converter
Convert a JPEG, PNG, or WebP image to modern WebP with adjustable export quality.
Runs locallyNo image upload to Nirmion
Step 1 / Source
Choose one image
Drop your image here
Or browse for a JPEG, PNG, or WebP image that you own or are authorised to edit.
One file · up to 20 MB · maximum 50 megapixelsStep 2 / Output
Choose WebP quality
Dimensions stay unchanged while the browser re-encodes the pixels as a still WebP image.
WebP outputThe downloaded filename ends with _nirmion_tools_converted.webp.
Keep this page open until the download begins.01No server upload
The selected image is decoded and re-encoded inside this browser tab.
02Working copy released
After download, the preview URL, decoded bitmap, canvas, and selected source reference are cleared.
03Your download remains
Nirmion cannot remove the finished file from your device or browser download history.
Workflow guide
Modern image delivery without an upload
Create a compact WebP asset for websites, product cards, and social publishing workflows.Social-ready choices
Confirm the destination accepts WebP; some advertising, marketplace, or older content systems still request JPEG or PNG.
What you receive
A same-dimension WebP downloads automatically, followed by cleanup of temporary browser objects.
Decision guide
Use WebP where the delivery chain supports it
WebP often offers useful web delivery savings for photographs and graphics, but the smallest file is not useful when a destination rejects the extension or recompresses it unpredictably.
The converter keeps source dimensions and creates a still WebP. Transparent PNG artwork can remain transparent, while JPEG sources stay opaque; colour management may still differ across browsers and publishing systems.
Where WebP works well
- Prepare website cards, article images, and thumbnails for modern browsers.
- Reduce product imagery for a CMS that explicitly supports WebP.
- Create an alternate modern asset while retaining JPEG or PNG originals.
Good to know
Important image boundaries
- Why might a PNG not become smaller?
- PNG is lossless and browsers do not expose a quality control for it. Choose WebP or JPEG when reducing file size matters more than exact lossless pixels.
- Are animated images supported?
- No. The workspace accepts still JPEG, PNG, and WebP files. Re-encoding an animated source would otherwise keep only one frame.
- What does clearing the file mean?
- Because processing is local, there is no Nirmion server copy to delete. The tab releases its working references after success; your downloaded output remains on your device.